At this time, Li Yiting thought of a question, "Now we know that butterflies bite people, thus poisoning the victims, but this premise is that there are butterflies under the mine." But we all know that the conditions in the underground are very bad, with no sunlight all day, dark and damp, and poor air circulation. Last time, Zichen went to the mine for an inspection, and his body had an adverse reaction, how did these butterflies come about? How can they adapt to this environment?"

For this sudden question, Chen Tianyu, Liu Zichen and Xu Jingnan who were present could not answer, they are not biologists after all, and naturally they do not know so much about the living habits of butterflies, but no matter what, the underground situation, normal animals and insects, are very difficult to get by.

The reason why Li Yiting proposed it was because he had worked underground for so long and had really seen butterflies flying, but those butterflies were normal, except that they were a little dirty by coal, they were not much different from the butterflies outside, and they were not grimaces.

When they saw those butterflies, the miners would unconsciously get nervous, for fear that the butterfly elves would come to ask for their lives. Fortunately, the number of times butterflies appear is very small, and Li Yiting has only seen it twice in total after doing it for so long.

Liu Zichen thought for a moment and asked suspiciously, "Yiting, could it be brought down by miners?"

"This doesn't make any sense at all! Why do you want butterflies to go down in the mine, is it to frighten people? As for the things that can fly in the sneaking area with miners, it is very easy to discover, and besides, what's the point of taking them down? This seems to be an act that does not do any good to oneself!" Li Yiting said in an analysis.

"But the butterflies probably won't fly in on their own, not to mention that the well is so deep, if they can't see it, they should fly out. Liu Zichen continued.

Chen Tianyu nodded, "What you said makes sense, butterflies are also creatures, they like sunlight and will not take the initiative to fly into the well." I think it may be because there are things below that attract them, or it is also what Zichen said, someone deliberately brought it down. At this point, you and Yongkun should leave a special message at work, especially when entering and exiting the mine.

Just when everyone was puzzled, Liu Zichen had a flash of inspiration, and she remembered something.

"By the way, Mingyue told me a few days ago that in a valley not far to the right of the coal mine, she found an old madman who raised butterflies. Later, I specially asked Aunt Yan, she said that the old madman has been raising butterflies in the mining area for decades, and I wonder if the butterflies in the coal mine are raised by the old madman?"

"Do you have any evidence?" asked Chen Tianyu.

Liu Zichen shook his head, "Of course not, I just heard what Mingyue said, she seems to have been attacked by an old madman." Just because he accidentally broke into the cave where the old madman raised butterflies, he was chased and beaten by the old madman, it seems that Zou Shaotang was still a little injured, but it doesn't matter. I thought, such a paranoid person, can actually raise butterflies in the valley, and he has been raising them for decades, and his thoughts and thinking must be different from others. ”

Li Yiting felt that this character was very suspicious, "The old madman may indeed be involved in the case, he has raised butterflies for so many years, needless to say, he has a lot of experience, and those butterflies must also listen to his dispatch and let him go wherever he goes." For example, an old madman can lure butterflies down the mines, and then take the opportunity to cultivate toxins. ”

After Xu Jingnan heard this, he gestured to interrupt, "I'm sorry, teacher, according to my investigation, this toxin should not be cultivated artificially. In addition to the need for butterflies, a specific sealing environment is also required, as well as proper heat release, and if you don't grasp it well, butterfly larvae will be burned to death. In addition, although the butterfly is sealed in the mine, it cannot live without eating or drinking, and it may be the specific resources and conditions in the coal mine that allow them to save the minimum living needs. But in any case, artificial breeding is not realistic, and it is basically impossible to succeed, otherwise someone would have used this method to cultivate poisonous butterflies. ”

Li Yiting felt that it made sense when he heard it, but he was still very interested in this character, "Jing Nan is analyzed from a medical point of view, and it is unlikely, but as a detective, any possibility needs conclusive evidence to rule it out." We now know that if the old madman can control the butterfly, then even if he doesn't raise it himself, it is not completely impossible to take advantage of the explosion to cultivate the butterfly. After all, this old madman behaves strangely, and his purpose may be paranoid, and he doesn't necessarily want butterflies to harm people, maybe he just likes it, or he makes an unintentional discovery. In short, his thinking must not be measured by ordinary people's standards. ”

Liu Zichen felt that the dispute between the two was a little unreasonable, because it was just speculation, except for Mingyue, none of them had ever seen the old madman and her butterfly, so he proposed that everyone go to the valley to verify it in person, and then make a difference.

Chen Tianyu answered the phone at this time, and after chatting a few words, he hung up and said to everyone, "Actually, after Mingyue reported to me about the old madman, I asked Kuangsuo to investigate." Just now he told me that the identity of the old madman has been found, this person was a biology teacher when he was young, and then he left school for some reason, and one day, he was found to be living in seclusion in the mining area to raise butterflies, that is, not long before Yan Damiang met him. ”

Liu Zichen exclaimed, "He is actually a biology teacher, no wonder he is so professional and can raise so many butterflies!"

Li Yiting knew the identity of the old madman, and he was even more suspicious, "Tianyu, as a biology teacher, he has absolutely indispensable professional knowledge, maybe in a certain aspect, behind closed doors, there is really a breakthrough." ”

"Do you still think that the old madman would deliberately create this kind of condition and cultivate the toxins of butterflies to harm people?" Liu Zichen asked rhetorically.

"No, Zichen, my opinion is that he hopes to make a toxin that he has never done before, so that he can make a difference in the field of biology. As for harming people, he probably won't, and besides, he has been in the mining area for 30 years, and this coal mine was only established more than ten years ago, and the people above the coal mine have no way to know that the coal mine will be built here many years later. Li Yiting explained his point.

Chen Tianyu concluded, "Let's discuss it here! Zichen, you go and cooperate with Kuangsuo, try to find out the purpose of the old madman raising butterflies here, and in addition, you have to investigate who he has contact with and who he has business dealings with. ”